The control module detected the fault condition "Mechanical blockage" for the Fault in the variable valve lift system. Documented for the Bosch MED 17.4.x engine ECU (EP6 THP family) on Peugeot applications; the same PSA control units are also fitted to Citroën models.
TuningBot DTC Database · v4.37.15
P1031 PSA - Fault in the variable valve lift system : Mechanical blockage
Manufacturer-specific interpretation for PSA. All interpretations of P1031
What P1031 means
The control module detected the fault condition "Mechanical blockage" for the Fault in the variable valve lift system. Documented for the Bosch MEV17.4 engine ECU (EP6 1.6 VTi) on Peugeot applications; the same PSA control units are also fitted to Citroën models.
Related and nearby codes
How to read P1031
Powertrain: engine, transmission and driveline systems.
Manufacturer-defined range: the meaning can differ between brands.
Specific fault index within the subsystem.
Frequently asked questions about P1031
What does P1031 mean?
Fault in the variable valve lift system : Mechanical blockage. The control module detected the fault condition "Mechanical blockage" for the Fault in the variable valve lift system. Documented for the Bosch MED 17.4.x engine ECU (EP6 THP family) on Peugeot applications; the same PSA control units are also fitted to Citroën models.
Is P1031 generic or manufacturer-specific?
P1031 is a manufacturer-specific code. In this database it is documented for: PSA. The same number can mean something different on other brands.
Can TuningBot remove P1031 at file level?
If the fault logic lives in the ECU calibration, yes: our DTC Removal file service disables the specific fault entry. Checksum correction is not included: it is a separate, optional service. Not sure whether your case qualifies? Request a free assessment and our engineers will check your ECU file.
Other file services
Understand the system behind this code: Diagnostic Strategy and DTC Logic
